#include "markdown/markdown.hpp"
#include <string>

static bool replace_once(std::string &str, const std::string &from,
                         const std::string &to) {
  size_t start_pos = str.find(from);
  if (start_pos == std::string::npos)
    return false;
  str.replace(start_pos, from.length(), to);
  return true;
}